What is unity and how does it serve as a goal for ecumenical dialogue? How can churches, ecumenical organizations, ministers, and theologians effectively approach this goal in the twenty-first century? Sustaining the Hope for Unity offers a methodological reflection on these questions using insights of contemporary critical theory. With particular attention to the work of Jürgen Habermas, the book develops a framework for exchanging religious narratives in a postmodern context marked by pluralism and ambiguity. Using this framework to address questions that have emerged out of the life of the World Council of Churches, Sustaining the Hope for Unity argues that unity must be imagined eschatologically in order to achieve inclusive and non-coercive dialogue between diverse Christian communities. Looking ahead to ecumenism in the twenty-first century, it makes a case for the role of the WCC as a public space for the exchange of religious narratives.